Home / 15,815.84-23,716.08-4,869.28

Finding the Fourth Proportional to 15,815.84, 23,716.08 and 4,869.28

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Solution

The fourth proportional to 15,815.84, 23,716.08 and 4,869.28 is: 7,301.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.84 : 23,716.08 = 4,869.28 : x
  2. Step 2: Convert to fraction form
    15,815.84/23,716.08 = 4,869.28/x
  3. Step 3: Cross multiply
    15,815.84x = 23,716.08 × 4,869.28
  4. Step 4: Simplify right side
    15,815.84x = 115,480,234.02
  5. Step 5: Solve for x
    x = 115,480,234.02/15,815.84
  6. Step 6: Final answer
    x = 7,301.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.